I'm hot after a Romeo Zero for my P365 XL. And I just realized a few minutes ago that I don't have a clue how far away I should sight in the red dot. I am thinking 15 yards (not too many reasons to shoot in self defense situation at longer distances IMO), but would like to hear other distances and reasons.

Bob

I briefly experimented with a P320 RX Compact. I sold it but may give the red dot another try as my eyes are not getting any better. When I shot mine I zeroed it at 25 yards. I dont recall any really significant impact shift at closer distances. Having the ability to make a longer shot with no effect on close range shots is a plus, IMHO.

This video has some good insight as to the pros and cons of 10, 15, and 25 yard zeros.
https://m.youtube.com/watch?v=-msm_3201DM

FWIW, I zero every pistol at 25 yards - just because I'm used to every pistol being zeroed at 25 yards.

When I went to the three day instructor course at Sigg they recommended 25 yards for pistol mounted optics they now have changed and recommend 15 yards as being OK to zero a red dot optic

Thank you all for the info. IF I can ever find a Romeo Zero, I'm thinking seriously of 15 yards.

As a young policeman, 50 years ago, I always sighted my handguns to 25 yards. Now, I just can't seem to justify that distance BUT I plan to try first at 25 and then move to 15 to see what the decrease in distance has done to the placement of the bullet.

If it's an inch or less, then I'll leave it but if it's more, then I'll probably move it to 15.

Bob

I have at least 6 guns with dot sights on them.
Most are just used for shooting IDPA and USPSA.
I have them all sighted in, dead on at 15 yards, but, have shot them, on paper from 2 yards, to 100 yards.
Depending on how much higher the dot is, in relationship to the bore, will change point of impact at various ranges.
With 15 yard zero, all are a little high at 25 yards, and low, at closer ranges than 15 yards.

I recently attended a 3 day pistol mounted optics instructor class at Sig academy. They initially recommended the 25 yard zero. They now use a 15 yard zero they did testing with various ammo bullet weights etc. https://www.youtube.com/watch?v=6GrBnBiIxJo

quote:

Originally posted by straightshooter1:

If it's an inch or less, then I'll leave it but if it's more, then I'll probably move it to 15.

If you sight in your red dot at 25 yards, then at distances less than 25 yards, your point of impact will be low, with the greatest deviation at the muzzle (obviously the distance between the red dot and the muzzle centerline). For distances between the muzzle and 25 yards, the amount of deviation between point of aim and point of impact is very nearly linear, such that at half the distance you get half the maximum deviation and so on.

Therefore at 12.5 yards you can expect the deviation to be about half the distance between the red dot and the muzzle (and will be less than half at 15 yards). So, unless your red dot is sitting more than 2 inches above your muzzle, your point of impact at 15 yards will be within an inch of your point of aim (for a 25 yard zero) and you are good to go!

I thank all of you for your insightful replies. I really appreciate them.

Bob

Straightshooter:
I suspect Shield is making the Zero sights.
I communicated with the Shield reps (in England where they're made.
He suggested zeroing in at 17 meters.
He felt that'd be suitable for closer distances and still be fine for self defense.
I tried that and it did seem okay at closer shots
too.
Poli Viejo